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Determination of plutonium and americium in moss and lichen samples

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Abstract

A simple, sensitive and selective method is described for the simultaneous determination of plutonium and americium in lichen and moss samples which can be used as the atmospheric radioactivity bioindicators. Plutonium is separated from a HCl leaching solution by a Microthene-TNOA column; americium is separated by a KL-HDEHP column and purified by PMBP-TOPO extraction. A special attention has been paid to the decontamination of plutonium and americium from210Po. Ten lichen and 12 moss samples from tree trunks have been analyzed: starting from 2 g sample, the average yields and the detection limits were 70.2±12.5% and 28 mBq/kg for plutonium and 70.0±15.1% and 34 mBq/kg for americium. The concentrations (mBq/kg) ranged from ≤28 to 4960 for239,240Pu, from ≤28 to 171 for238Pu and from ≤34 to 1930 for241Am, respectively.

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Authors and Affiliations

  1. China Institute of Atomic Energy, Beijing, P.R. China

    G. Jia

  2. Instituto di Chimica Generale, Universita di Urbino, Piazza Rinascimento 6, Urbino, Italy

    D. Desideri, F. Guerra, M. A. Meli & C. Testa

Authors
  1. G. Jia
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  2. D. Desideri
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  3. F. Guerra
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  4. M. A. Meli
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  5. C. Testa
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Jia, G., Desideri, D., Guerra, F. et al. Determination of plutonium and americium in moss and lichen samples. J Radioanal Nucl Chem 220, 15–19 (1997). https://doi.org/10.1007/BF02035340

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  • DOI: https://doi.org/10.1007/BF02035340

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